Hydration Kit for helmets by Zamp Racing. A quick disconnect allows for the racer to quickly plug into a hydration system in the car, or get out of the car with the hydration hose still attached to the helmet.
See the images in the image gallery to see how this kit works. This kit is compatible with all RZ-70E, RL-70E helmets in particular, or any helmet with the hydration port installed (via the side or front panels).